79.96% is the change from 509 to 916
Calculation steps:
[( 916 - 509 ) ÷ 509] x 100 = 79.96%
Formula
Percentage change = [(916 - 509) / 509] x 100
Subtract the new number by the original number
916 - 509 = 407
407 ÷ 509 = 0.7996070726915521
0.7996070726915521 x 100 = 79.96%